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BMW 3-Series (E90 E92) Forum
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Several retrofits on E90 2010
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05-15-2022, 04:06 AM | #1 |
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Several retrofits on E90 2010
I bought a used E90 320i from 2010 in Japan, with CIC.
It came without TCU, MULF, Combox, PDC, cameras of any kind, no USB port on the armrest. It came with basic audio: no tweeters, external amp or processing. This is what I have done so far:
I want to retrofit as much as possible:
I'm focusing now on the Combox and armrest USB, but I mention the other plans in case it's easier to do several things at once, or it makes any difference on the Combox location/cabling decisions, etc. I've read many Combox retrofit posts, but they all start with the premise that the car comes with TCU and/or MULF, so the trunk has all the necessary cables. Mine doesn't. On the trunk I could only find a bundle of cables:
I don't know what these cables are for, but I don't think they're enough for a TCU. There is not even a metal tray to attach a MULF, TCU or Combox. I don't know if there is a microphone already preinstalled, how do I find out? So I have several questions:
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05-15-2022, 02:47 PM | #2 |
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oh boy.... be prepared to do a lot of work. I've retrofitted usb audio so I can try answering a few questions
first of all because you are missing alot of wiring compared to PRE-LCI E90s, this retrofit process will be extra complicated And the Telematics has additional functions, but some (or all?) won't work anymore due to BMW discontinuing some services. The service BMW North America canceled is BMW Assist, basically the car is supposed to call for help automatically with your GPS coordinate if it detects a crash with airbags deployed This is confirmed for BMW North America, but please check BMW Japan, they might have different policy, or they might not offer the service at all. I don't know what these cables are for, but I don't think they're enough for a TCU. although it is missing a lot of wires, the white plug is meant to be used for TCU brown wire is ground red-yellow wire is power yellow wire, black wire, and transparent wire is for microphone I believe you are definitely missing telematics wire for TCU in the trunk Where should I install the Combox? I prefer it in the trunk, but is it feasible? combox will have to be installed in the trunk, that is where it is installed officially from the factory How can I find the metal tray to attach the Combox? you will need a bracket to hold the combox in the back of your trunk part number (65159135687) use the two 10mm screws in your first picture to hold the bracket in place, the combox will be held by 8mm nuts I believe, you can either get it from the dealer or get lucky in the scrap yard Will I have to install a microphone? microphone will be used for telephone calls based on the lack of any modules in your picture, you definitely will need to install a microphone follow this to install microphone/check if you do have it for sure https://speed.academy/bmw-e92-e90-33...rofit-install/ The retrofit process is a lot more complicated than what I can put in words here.... But I am available for a zoom call to explain this in detail if you're interested Last edited by sam9116; 07-09-2022 at 03:09 PM.. |
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07-01-2022, 03:25 AM | #3 |
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Connection diagram
Well, I tried to contact @sam9116 privately, but he must be busy.
Can anyone confirm if this connection diagram is correct? https://drive.google.com/file/d/1d7k...ew?usp=sharing Edit: updated link to diagrams.net, it should work now. An export looks like this: Last edited by jefecito; 07-08-2022 at 10:55 PM.. Reason: Updated link |
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07-01-2022, 05:25 AM | #5 |
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Where are you based? I have a combox, mounting bracket and entire combox loom from a 2011 e92 M3 (factory CIC). It came with the individual audio kit I bought. I'm not sure if the internal antennas are there, I need to check. I just took the speaker loom out of it and put the rest of the loom away. An e92 loom might be a too short for an e90, you would need to check. I can take measurements for you if you want.
I also have the HK kit that came out of my own e92 M3
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07-03-2022, 05:51 PM | #6 | |
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Quote:
Last edited by sam9116; 07-03-2022 at 06:47 PM.. |
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07-03-2022, 06:03 PM | #7 | |
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(only issue was the power cable for USB hub/MULF was routed to the white plug inside the glove box where the microphone wire resides, but I did not have any power cable on my end for the white plug inside the glove box, I had to find another power source) there is this dude who retrofitted a Gen 2 BN2000 Combox that is capable of working with BMW assist because it uses 4G instead of 2G. That is something significant to consider when retrofitting combox https://www.m3post.com/forums/showthread.php?t=1812848 Last edited by sam9116; 07-03-2022 at 06:32 PM.. |
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07-08-2022, 10:59 PM | #9 | |
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I'm located in Japan, if you want you can post this stuff on Ebay or something and send me the link(s). |
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combox, e90, retrofit, usb 6nf |
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